Astonishing support for big boobs, so you can wear what you want.

Astonishing support for big boobs, so you can wear what you want.

The Symmes Strapless Bra
sewing pattern is a revolution!

Unbelievable lift, shape & support

Designed by big-boob experts, with 4-piece boned cups, soft inner foam and angled band boning for a secure but flexible fit.

All day comfort

No slipping, no digging, no poking: just all-day comfort, no matter what you're wearing.

Sizes 28C to 54J

Got big boobs? We can fit them! Choose from 126 unique sizes.

Help at every step

Learn how to sew your Symmes with in-depth, clear instructions, and our free video sewalong

Buy the Symmes Strapless Bra

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Why I designed the Symmes

I spent half my life feeling envious of people wearing tops with dainty straps or off-the-shoulder styles. My chunky bra straps could never!

But finally after months of development, the Cashmerette team has done the impossible: we cracked the code on strapless bras for big boobs.

Prepared to be astonished by the lift, shape, support and comfort of the Symmes—and then go on a sewing frenzy making all the garments you've been missing out on for so long!

The ultimate strapless bra for big boobs

Big-boob-tested design details

Designed by professional industry drafters, the Symmes includes:

  • 4-piece vertically seamed cups
  • Cups with foam and boning
  • Wide band with angled boning
  • Customized hook and eye unit

Expansive sizing

Your Symmes sewing pattern comes with:

  • 14 band sizes from 28 to 54
  • 9 cup sizes from C to J
  • Full instructions on how to choose your size

So many fabric options

Design the bra of your dreams! The Symmes is suitable for almost all wovens, and has optional lining. We even have kits available from our partners.

Notions you'll need

In addition to fabric, you'll need elastic, bias tape, hook & eye closure, boning and underwires. We take you through it in detail in the instructions, and the video sewalong. Plus, we have kits available!

Help at every step

The Symmes Strapless Bra is rated "advanced", but you're never alone when you sew with Cashmerette. Watch the free video sewalong to follow along from start to finish, and get further help from our extensive online fit guides